Blood pressure information measurement device and blood pressure information measurement method
First Claim
1. A blood pressure information measurement device for calculating an index of a degree of arteriosclerosis of a measurement subject as blood pressure information, comprising:
- a detection member comprising a plurality of pressure sensors;
a central processing unit that detects a pulse waveform by bringing the detection member into contact with an exterior of a measurement site of the measurement subject, wherein the central processing unit;
acquires factor information for the degree of arteriosclerosis;
converts the factor information to a coefficient α
, the coefficient α
being a function of the factor information;
stores a first reference waveform and a second reference waveform;
generates a waveform estimated as a blood flow waveform by compositing the first reference waveform and the second reference waveform using the coefficient α
;
decomposes the pulse waveform into waveforms of an ejected wave and a reflected wave using the pulse waveform and the waveform estimated as the blood flow waveform; and
calculates the index of the degree of arteriosclerosis from a relationship between the ejected wave and the reflected wave obtained by decomposing the pulse waveform; and
a display that displays the index of the degree of arteriosclerosis.
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Accused Products
Abstract
A CPU acquires factor information for a degree of arteriosclerosis, stores a plurality of pseudo blood flow waveforms, generates a waveform estimated as a blood flow waveform by compositing the plurality of pseudo blood flow waveforms based on the factor information, decomposes a pulse waveform into waveforms of an ejected wave and a reflected wave using the pulse waveform and the waveform estimated as the blood flow waveform, and calculates an index of the degree of arteriosclerosis from a relationship between the ejected wave and the reflected wave obtained by decomposing the pulse waveform.
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Citations
13 Claims
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1. A blood pressure information measurement device for calculating an index of a degree of arteriosclerosis of a measurement subject as blood pressure information, comprising:
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a detection member comprising a plurality of pressure sensors; a central processing unit that detects a pulse waveform by bringing the detection member into contact with an exterior of a measurement site of the measurement subject, wherein the central processing unit; acquires factor information for the degree of arteriosclerosis; converts the factor information to a coefficient α
, the coefficient α
being a function of the factor information;stores a first reference waveform and a second reference waveform; generates a waveform estimated as a blood flow waveform by compositing the first reference waveform and the second reference waveform using the coefficient α
;decomposes the pulse waveform into waveforms of an ejected wave and a reflected wave using the pulse waveform and the waveform estimated as the blood flow waveform; and calculates the index of the degree of arteriosclerosis from a relationship between the ejected wave and the reflected wave obtained by decomposing the pulse waveform; and a display that displays the index of the degree of arteriosclerosis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13)
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8. A method for calculating an index of a degree of arteriosclerosis of a measurement subject as blood pressure information in a blood pressure information measurement device, comprising:
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detecting a pulse waveform by bringing a detection member comprising a plurality of pressure sensors into contact with an exterior of a measurement site of the measurement subject; acquiring factor information for the degree of arteriosclerosis; converting the factor information to a coefficient α
, the coefficient α
being a function of the factor information;storing a first reference waveform and a second reference waveform; generating a waveform estimated as a blood flow waveform by compositing the first reference waveform and the second reference waveform using the coefficient α
;decomposing the pulse waveform into waveforms of an ejected wave and a reflected wave using the pulse waveform and the waveform estimated as the blood flow waveform; calculating the index of the degree of arteriosclerosis from a relationship between the ejected wave and the reflected wave obtained by decomposing the pulse waveform; and displaying the index of the degree of arteriosclerosis.
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Specification